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Finding the Fourth Proportional to 60,109.88, 90,128.82 and 28,527.80

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Solution

The fourth proportional to 60,109.88, 90,128.82 and 28,527.80 is: 42,774.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,109.88 : 90,128.82 = 28,527.80 : x
  2. Step 2: Convert to fraction form
    60,109.88/90,128.82 = 28,527.80/x
  3. Step 3: Cross multiply
    60,109.88x = 90,128.82 × 28,527.80
  4. Step 4: Simplify right side
    60,109.88x = 2,571,176,951.20
  5. Step 5: Solve for x
    x = 2,571,176,951.20/60,109.88
  6. Step 6: Final answer
    x = 42,774.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.